Is Davenport, IA Tap Water Safe? Quality & Contaminants

What was found in Davenport's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	3660 µg/L 37% of the EPA limit 10000 µg/L	3/5	SYR4
Copper	2400 µg/L 185% of the EPA limit, in the worst sample — 1300 µg/L	3/5	SYR4
Fluoride	650 µg/L 16% of the EPA limit 4000 µg/L	2/5	SYR4
Barium	604 µg/L 30% of the EPA limit 2000 µg/L	1/5	SYR4
TTHM	99.5 µg/L 124% of the EPA limit, in the worst sample — 80 µg/L	1/5	SYR4
Chloroform	87.5 µg/L No EPA limit set	1/5	SYR4
Total Haloacetic Acids (HAA5)	81.6 µg/L 136% of the EPA limit, in the worst sample — 60 µg/L	1/5	SYR4
Trichloroacetic Acid	44.6 µg/L No EPA limit set	1/5	SYR4
Dichloroacetic Acid	37.1 µg/L No EPA limit set	1/5	SYR4
Monobromoacetic Acid	16.5 µg/L No EPA limit set	1/5	SYR4
Arsenic	12.2 µg/L 122% of the EPA limit, in the worst sample — 10 µg/L	1/5	SYR4
Dibromoacetic Acid	12.2 µg/L No EPA limit set	1/5	SYR4
Bromodichloromethane	11.2 µg/L No EPA limit set	1/5	SYR4
Lead	11 µg/L 73% of the EPA limit 15 µg/L	2/5	SYR4
Monochloroacetic Acid	4.7 µg/L No EPA limit set	1/5	SYR4
Combined Radium (-226 And -228)	2 pCi/L 40% of the EPA limit 5 pCi/L	2/5	SYR4
Dibromochloromethane	1.9 µg/L No EPA limit set	1/5	SYR4
Atrazine	0.8000 µg/L 27% of the EPA limit 3 µg/L	1/5	SYR4
2,4-D	0.2000 µg/L 0.3% of the EPA limit 70 µg/L	1/5	SYR4
Pfba	0.0148 µg/L No EPA limit set	1/5	UCMR-5
Lead	0.0140 mg/L 93% of the EPA limit 0.0150 mg/L	5/5	LCR
PFOA	0.0041 µg/L No EPA limit set	1/5	UCMR-5

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Davenport

Supplier	Population served
IOWA-AMERICAN WTR CO-DAVENPORT	147,720
PONDEROSA PARK MHP	320
MT JOY MOBILE HOME PARK	140
KNOLLCREST HOA	42
FASHIONABLE MEADOWS	40

Frequently asked questions about Davenport tap water

Is Davenport tap water safe to drink?

EPA testing detected 22 contaminants in the water serving Davenport. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Davenport?

5 public water suppliers report drinking-water monitoring for Davenport, Iowa to the EPA. Each is listed above with its population served.

What contaminants are in Davenport's water?

The contaminants EPA monitoring detected in Davenport include Nitrate, Copper, Fluoride, Barium, TTHM. The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.